It’s been two years since 18-year-old Conrad Roy III committed suicide by connecting a generator to a truck’s exhaust and dying of carbon monoxide poisoning in his garage.

The story turns from tragic to downright inconceivable when news broke that Conrad spoke with his long distance girlfriend, Michelle Carter, for 47 minutes on the phone while he sat in his car. Instead of trying to save her boyfriend, the then 17-year-old encouraged Conrad to kill himself, even...